Divide the 12 balls into 4 groups of 3's.tvb now,tvbnow,bttvb) K4 o' K F0 u3 l2 `
Weigh group 1 & 2
! ~; a* W: p) B- a( J$ _! r1 i公仔箱論壇then weigh group 2 & 3. X( b& N+ ^8 Q1 p
If the results are Equal & Equal, it means the ball with the different weight is in group 4.tvb now,tvbnow,bttvb2 y: k8 `5 q; G' v2 Y. E
If the results are Equal & Unequal, it means the ball is in group 3.
5 |6 h q9 ^8 u; T) LIf the results are Unequal & Equal, it means the ball is in group 1.
. p9 Z% J# f! x w! Rtvb now,tvbnow,bttvbIf the results are Unequal & Unequal, it means the ball is in group 2.
+ C) T8 ?% R, T4 l8 ~6 V2 ^" i公仔箱論壇
8 F, ~" L, q7 V1 ltvb now,tvbnow,bttvbOnce you determine the group that contains the ball.
: d4 B# o) o* ?. w3 ]公仔箱論壇Simply weigh two of the balls |
發表於 2007-11-15 03:54 PM
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